The headset was originally designed for the US military and incorporates closer tolerance components. Also, the 17-79 has an extended battery life of 35-45 hours continuous use, and larger earcups for added noise attenuation. A new module design allows for the use of a throat mic for extreme noise environments. Weighs 415 grams. Supplied with charger, padded headset case and comm-cord. The Pilot 17-79 offers performance, durabillity and comfort over long periods of time.